Across
- 6. /a cloud of interstellar gas and dust
- 7. /the revolution around a star
- 8. /the act of spinning on an axis
- 9. /the whole world
Down
- 1. /a body of rock or gas that revolves around a star
- 2. /a small body of rock that revolves around the sun
- 3. /the infinite space above earths atmosphere
- 4. /an expert in astronomy
- 5. /the mass orbiting earth
- 10. /the third planet from the sun